If the conversion is taken place as on Balance sheet date, the same INR amount can be considered in Balance sheet.
OR if the loan received on any other date and accordingly convered into INR and the unpaid loan is outstanding as on BAlance Sheet date then amount should be converted into INR by taking the rate prevailing as on Balance Sheet date. The amount resulted in difference in foreign exchange rates will be routed through Profit and Loss Account if the loan is not for fixed assets. In the case the loan is for Fixed assets, the difference can be adjusted against carrying value of fixed assets ( As per recent notification by Govt.)
Yes the loan should be reinstated as Per AS11 and the effetcs must be dr or credited in the P&L A/C. . .It is better to reinstate the loan on a monthly basis than on a yearly basis.So that the currency fluctuation doesnot show a huge amount of difference